Key fob



FIG. 1 is a top perspective view of a key fob showing my new design;

FIG. 2 is a top perspective view shown in an open position;

FIG. 3 is a bottom perspective view of FIG. 1; and,

FIG. 4 is a front elevational view of FIG. 1. 

The ornamental design for a key fob, as shown and described. 